scqubits.TunableTransmon.plot_coherence_vs_paramvals#

TunableTransmon.plot_coherence_vs_paramvals(param_name, param_vals, noise_channels=None, common_noise_options=None, spectrum_data=None, scale=1, num_cpus=None, **kwargs)#

Show plots of coherence for various channels supported by the qubit as they vary as a function of a changing parameter.

For example, assuming qubit is a qubit object with flux being one of its parameters, one can see how coherence due to various noise channels vary as the flux changes:

qubit.plot_coherence_vs_paramvals(param_name='flux',
                                  param_vals=np.linspace(-0.5, 0.5, 100),
                                  scale=1e-3,
                                  ylabel=r"$\mu s$");
Parameters:

  • param_name (str) – name of parameter to be varied

  • param_vals (ndarray) – parameter values to be plugged in

  • noise_channels (Union[str, List[str], List[Tuple[str, Dict]], None]) – channels to be plotted, if None then noise channels given by supported_noise_channels are used

  • common_noise_options (Optional[Dict]) – common options used when calculating coherence times

  • spectrum_data (Optional[SpectrumData]) – spectral data used during noise calculations

  • scale (float) – a number that all data is multiplied by before being plotted

  • num_cpus (Optional[int]) – number of cores to be used for computation

Return type:

Figure, Axes